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Maritime & Ocean Data

Flanders Marine Institute EEZ Boundaries

VLIZ EEZ boundaries are the authoritative global maritime jurisdiction dataset covering all coastal states.

Format GeoJSON / Shapefile
Coverage Global (all coastal states)
Resolution Maritime boundary level
License Free open access (CC BY 4.0)
Update Periodic updates
Download source Open official source

Format

GeoJSON / Shapefile

Geometry

Polygon (maritime zones)

Coverage

Global (all coastal states)

Resolution

Maritime boundary level

About this dataset

Global Exclusive Economic Zone boundaries from VLIZ, the standard reference for maritime jurisdiction.

The Flanders Marine Institute (VLIZ) maintains the authoritative global dataset of EEZ boundaries including territorial seas, contiguous zones, and extended continental shelf submissions for all coastal states.

Maritime jurisdiction mapping Fisheries management Offshore energy planning

How to download

  1. 1 Open the Marineregions download page.
  2. 2 Select EEZ boundaries or other maritime zones.
  3. 3 Download the GeoJSON or shapefile.
  4. 4 Open in GIS and overlay with oceanographic data.

Marineregions downloads

Download EEZ, IHO, and other boundaries

→

WMS/WFS

OGC web services for maritime zones

→

FAQ

What zones are included?

EEZ boundaries, Territorial Seas (12nm), Contiguous Zones (24nm), and Extended Continental Shelf submissions.

How often are boundaries updated?

Boundaries are updated as new treaties, UN submissions, or court decisions modify maritime jurisdictions.